The Contact Makes the Device: Molecules that Rule the Solar Cells Efficiency.
Emilio Palomares Gil b
a Institute of Chemical Research of Catalonia (ICIQ-CERCA), Avinguda Països Catalans 16, 43007 Tarragona, Spain.
b Catalan Institution for Research and Advanced Studies (ICREA) Passeig Lluïs Companys, 23, 08010, Barcelona, Spain
NIPHO25
Proceedings of International Conference on Perovskite Thin Film Photovoltaics and Perovskite Photonics and Optoelectronics (NIPHO25)
Cagliari, Italy, 2025 June 9th - 10th
Organizers: Giulia Grancini, Daniela Marongiu and Aldo Di Carlo
Invited Speaker, Emilio Palomares Gil, presentation 008
Publication date: 24th April 2025

Silicon solar cells have dominated the science and market for solar cells. Their efficiency was boosted after the passivation of their surface and minimised charge losses at the interface, allowing better contacts to extract the photoelectrical current.

In molecular solar cells, either organic or hybrid perovskite-based photoactive layers, selective contacts are paramount to obtain high efficiency. In the latter case, using self-assembled molecules is a must to push the solar cell efficiency up to 24% (under standard solar irradiation conditions). Our group pioneered the design and synthesis of self-assembled molecules ( SAMs) in perovskite solar cells and has focused on studying the relationship between the SAMs' molecular structure and device function. I will discuss the latest advances in SAMs for perovskite solar cells and how far we can achieve the maximum theoretical limit in perovskite solar cells and tandem devices.

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